一. 单项选择。（15分）
1. There is ______ “b” and _______“s” in the word “ bookcase”.
A. a; an B. an; a C. a; a D. an; an
2. Thanks ___ the photo ___ your family.
A. of , at B. of , for C. for , of D. for , for
3.Where _________ his new CD and computer game?
A. is B. are C. can D. isn’t
4. —Is the red book ___ ? —No, ______ is blue.
A. your, my book B. Tom’s, hers C. his , he D. yours, mine
